Admissions are based on "All India Ranks" and not "Percentile," so this varies from year to year. If your AIR is below 6000, based on the pattern of the previous two years, you may qualify for the home state quota. So, i think to get into NIT Kurukshetra CSE your score  should be near 99 percentile(open category).

For predicting more colleges using jee main rank use college predictor:

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

Hope this will help you!